Junko Yuina, a reserved and introspective art student, balances her solitary life with part-time dishwashing to sustain herself. Her mother’s early demise left her with a string of small bells worn around her neck—a cherished keepsake embodying familial bonds and inspiring her creative endeavors. A tentative friendship blossoms with the protagonist following their shared trauma after an attempted assault, anchoring their connection in empathy and resilience.

Junko’s artistic promise ignites turmoil when Emi Mizuchi, a rival from a formidable criminal dynasty, plagiarizes her work to claim victory in a high-stakes art competition. The theft spirals into Junko’s abduction, where she endures drugging, torture, and sustained physical and psychological torment. The original animation concludes her story with a staged suicide on train tracks, while the manga diverges: after exposing Emi’s deceit, Junko faces the Mizuchi family’s retribution—her mother’s murder, the deliberate crippling of her painting hand, and her eventual death via venomous snakebite, disguised as self-inflicted.

Her rapport with art instructor Mr. Tadaka begins with mutual admiration; he champions her admission to Takanoha High and nurtures her talent. However, the manga reveals the Mizuchi family’s coercion, forcing Tadaka to publicly denounce her work, deepening her despair. Junko’s tragedies galvanize the protagonist’s defiance against the Mizuchi clan, her demise sharpening their resolve.

Adaptations vary subtly—the manga directly links her mother’s death to Mizuchi vengeance, while the animation hints at an earlier passing. Regardless, Junko’s narrative endures as a testament to innocence shattered by systemic brutality and the unyielding spirit of artistic authenticity.